JP2003235992A - Syringe barrel manufacturing method and syringe - Google Patents
Syringe barrel manufacturing method and syringeInfo
- Publication number
- JP2003235992A JP2003235992A JP2002044848A JP2002044848A JP2003235992A JP 2003235992 A JP2003235992 A JP 2003235992A JP 2002044848 A JP2002044848 A JP 2002044848A JP 2002044848 A JP2002044848 A JP 2002044848A JP 2003235992 A JP2003235992 A JP 2003235992A
- Authority
- JP
- Japan
- Prior art keywords
- luer lock
- syringe barrel
- main body
- manufacturing
- lock portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、シリンジバレルの
製造方法及びその方法によって得られたシリンジバレル
を有するシリンジに関する。より詳しくは、シリンジバ
レルがルアロック構造でかつ樹脂製である場合に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a syringe barrel and a syringe having the syringe barrel obtained by the method. More specifically, it relates to a case where the syringe barrel has a luer lock structure and is made of resin.
【０００２】[0002]
【従来の技術】従来から、ルアロック構造のシリンジバ
レルは、ディスポ針などのロック対象を確実に取り付け
ることができるものとして、好適に使用されている。2. Description of the Related Art Conventionally, a syringe barrel having a luer lock structure has been suitably used as a device capable of securely attaching a lock target such as a disposable needle.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、ルアロ
ック構造のシリンジバレルは、その成形に複雑な構造の
金型が必要となる。周知のとおり、ルアロック構造は、
図１に示すように、本体筒部１０１の先端から突出する
突出筒部１０２及びこの突出筒部１０２を同軸的に取り
囲む筒状のルアロック部１０３で構成され、このルアロ
ック部１０３の内周面１０３ａに螺旋状にネジ山１０４
が形成された構成となっている。したがって、シリンジ
バレルの成形にあたっては、突出筒部１０２とルアロッ
ク部１０３との間のわずかしかない間隙が正確に形成さ
れ、かつルアロック部１０３の内周面１０３ａに正確に
ネジ山１０４が形成される複雑な構造の金型を使用しな
ければならない。複雑な構造の金型は、その製造にコス
トがかかり、また生産コストを抑えるための多数個取り
とすることが困難であるという問題を抱えている。However, the syringe barrel having a luer lock structure requires a die having a complicated structure for molding. As is well known, the lure lock structure is
As shown in FIG. 1, it is composed of a protruding tubular portion 102 protruding from the tip of the main body tubular portion 101 and a tubular luer lock portion 103 that coaxially surrounds the protruding tubular portion 102, and an inner peripheral surface 103 a of the luer lock portion 103. Spiral thread 104
Is formed. Therefore, when molding the syringe barrel, a small gap between the protruding cylinder portion 102 and the luer lock portion 103 is accurately formed, and the thread 104 is accurately formed on the inner peripheral surface 103 a of the luer lock portion 103. Molds with complex structures must be used. A mold having a complicated structure has problems that it is costly to manufacture and it is difficult to make a large number of molds for suppressing the production cost.
【０００４】さらに、仮に複雑な構造の金型で対応する
にしても、ルアロック部１０３の内周面１０３ａに形成
されたネジ山１０４はコア型（金型の一部）の引き離し
方向（ルアロック部１０３の軸方向）と交差する方向に
連続して突出するため、コア型の引き離しに際しては、
その引き離し速度と同調するようにコア型を回転させな
ければならず、この同調がわずかでもくるえば、ルアロ
ック部１０３やそれと一体化されている本体筒部１０１
などが破損するおそれがある。Further, even if a die having a complicated structure is used, the screw thread 104 formed on the inner peripheral surface 103a of the luer lock portion 103 is separated from the core die (a part of the die) in the separating direction (luer lock portion). Since it continuously protrudes in a direction intersecting (the axial direction of 103), when separating the core mold,
The core die must be rotated so as to be synchronized with the pulling speed, and if this synchronization is slight, the luer lock portion 103 or the main body tubular portion 101 integrated with the luer lock portion 103 is required.
May be damaged.
【０００５】そこで、本発明の第１の課題は、複雑な構
造の金型を使用する必要がないシリンジバレルの製造方
法、及びその方法により得られたシリンジバレルを有す
るシリンジを提供することにある。また、本発明の第２
の課題は、コア型の引き離しに際して、コア型を回転さ
せる必要がないシリンジバレルの製造方法、及びその方
法により得られたシリンジバレルを有するシリンジを提
供することにある。Therefore, a first object of the present invention is to provide a method of manufacturing a syringe barrel that does not require the use of a mold having a complicated structure, and a syringe having the syringe barrel obtained by the method. . The second aspect of the present invention
It is an object of the present invention to provide a method for manufacturing a syringe barrel that does not require rotation of the core mold when separating the core mold, and a syringe having the syringe barrel obtained by the method.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決した本発
明は次記のとおりである。
＜請求項１記載の発明＞ロック対象が着脱自在に連結さ
れる突出筒部を有する本体筒部と、前記突出筒部を同軸
的に取り囲みかつ内周面にネジ山が形成された筒状のル
アロック部とから構成される、樹脂製シリンジバレルの
製造方法において、少なくとも前記ルアロック部と前記
本体筒部とを個別に成形した後、これら成形品相互を接
合一体化し、前記ルアロック構造の樹脂製シリンジバレ
ルを得ることを特徴とするシリンジバレルの製造方法。The present invention which has solved the above-mentioned problems is as follows. <Invention of Claim 1> A main body cylindrical portion having a protruding cylindrical portion to which a lock target is detachably connected, and a cylindrical shape coaxially surrounding the protruding cylindrical portion and having a thread formed on an inner peripheral surface thereof. In a method for manufacturing a resin syringe barrel composed of a luer lock portion, at least the luer lock portion and the main body tubular portion are individually molded, and then these molded products are joined and integrated with each other to form a resin syringe of the luer lock structure. A method for manufacturing a syringe barrel, which comprises obtaining a barrel.
【０００７】＜請求項２記載の発明＞本体筒部及びルア
ロック部の各々における少なくとも接合予定部分を熱可
塑性樹脂で形成しておき、接合に際し、前記接合予定部
分相互を溶融接合する請求項１記載のシリンジバレルの
製造方法。<Invention of Claim 2> At least the portions to be joined in each of the main body tubular portion and the luer lock portion are formed of a thermoplastic resin, and upon joining, the portions to be joined are melt-joined. Manufacturing method of syringe barrel.
【０００８】＜請求項３記載の発明＞本体筒部とルアロ
ック部とを接合剤を用いて接合する請求項１記載のシリ
ンジバレルの製造方法。<Invention of Claim 3> The method of manufacturing a syringe barrel according to claim 1, wherein the main body tubular portion and the luer lock portion are joined using a joining agent.
【０００９】＜請求項４記載の発明＞少なくとも接合に
先立って、本体筒部の先端部分及びルアロック部のいず
れか一方に凸部を設け、かつ他方に凹部を設けておき、
前記接合に際し、前記凹部を加熱により熱膨張させ、こ
の熱膨張状態の凹部内に前記凸部を挿入又は嵌合させた
後、減温して前記凹部を収縮させて前記挿入又は嵌合部
分を密着させ、これによって前記ルアロック部と本体筒
部との接合一体化を行う、請求項１記載のシリンジバレ
ルの製造方法。<Invention of Claim 4> At least prior to joining, a convex portion is provided on one of the tip portion of the main body cylinder portion and the luer lock portion, and a concave portion is provided on the other.
At the time of the joining, the concave portion is thermally expanded by heating, and the convex portion is inserted or fitted into the concave portion in the thermally expanded state, and then the temperature is reduced to shrink the concave portion and the insert or fit portion is formed. The method for manufacturing a syringe barrel according to claim 1, wherein the luer lock portion and the main body tubular portion are joined and integrated by closely contacting each other.
【００１０】＜請求項５記載の発明＞ルアロック部のネ
ジ山は、下記式（１）で定まる周回数分しか連続しない
多条ネジ山である、請求項１〜４のいずれか１項に記載
のシリンジバレルの製造方法。
ｘ ≦ １／ｎ …（１）
ｘ：ネジ山の周回数，ｎ：条数<Invention of Claim 5> The thread of the lure lock portion is a multi-threaded thread which is continuous only for the number of turns determined by the following formula (1). Manufacturing method of syringe barrel. x ≤ 1 / n (1) x: number of turns of screw thread, n: number of threads
【００１１】＜請求項６記載の発明＞多条ネジ山を形成
するために、ルアロック部の成形に際し、長手方向の端
面相互を同軸的に突き合わせたときに、対向する一方の
部分と他方の部分とに跨りかつ前記ネジ山と対応した形
状をなす溝型が、当該突き合わせ部位の外周面に形成さ
れるように構成された、一対のコア型を用い、前記ルア
ロック部外面形状と対応する外型内に、前記一対のコア
型を前記突き合わせた状態でかつ外型内面から離間させ
た状態で配置して成形を行い、しかる後、外型を開くと
ともに、前記一対のコア型を回転させずに引き離して、
成形したルアロック部からそれぞれ引き抜き、成形品を
得る、請求項５記載のシリンジバレルの製造方法。<Invention of Claim 6> When forming a lure lock portion to form a multi-threaded thread, when the end faces in the longitudinal direction are coaxially butted against each other, one portion and the other portion which face each other are opposed to each other. An outer die corresponding to the outer surface shape of the luer lock part is formed by using a pair of core dies, each of which has a groove shape that is formed on the outer peripheral surface of the abutting portion and has a shape corresponding to the screw thread. Inside, the pair of core molds are arranged in a state of being abutted with each other and separated from the inner surface of the outer mold to perform molding, and thereafter, the outer mold is opened and the pair of core molds are not rotated. Pull away,
The method for manufacturing a syringe barrel according to claim 5, wherein each of the molded lure lock parts is drawn out to obtain a molded product.
【００１２】＜請求項７記載の発明＞請求項１〜６のい
ずれか１項に記載の方法によって得られるシリンジバレ
ルと、このシリンジバレル内に挿入されるピストンとを
備えたことを特徴とするシリンジ。<Invention of Claim 7> A syringe barrel obtained by the method according to any one of claims 1 to 6 and a piston inserted into the syringe barrel are provided. Syringe.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態を説明
する。
（シリンジ）本実施の形態に係るシリンジは、図２に示
すように、液体などを収容する樹脂製のシリンジバレル
１０と、このシリンジバレル１０内に往復自在に挿入さ
れたピストン２０とを主に有する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. (Syringe) As shown in FIG. 2, the syringe according to the present embodiment mainly includes a resin-made syringe barrel 10 for containing a liquid and the like, and a piston 20 reciprocally inserted into the syringe barrel 10. Have.
【００１４】ピストン２０は、ピストン本体部２１とこ
のピストン本体部２１の先端部に螺合されるなどして取
り付けられたピストン頭部２２とからなっている。ピス
トン頭部２２は、例えばエラストマー製などとすること
もできるが、本実施の形態では寸法安定性及び摺動容易
性の観点から樹脂製とした。The piston 20 is composed of a piston main body 21 and a piston head 22 attached to the tip of the piston main body 21 by screwing or the like. The piston head 22 may be made of, for example, an elastomer, but in the present embodiment, it is made of resin from the viewpoint of dimensional stability and sliding ease.
【００１５】ピストン頭部２２の周面には、周回りに１
周連続して突出する適宜の数の、本実施の形態では図２
中に拡大して示すように３つの鍔部２２Ａ，２２Ａ…が
形成されている。この鍔部２２Ａ，２２Ａ…は、シリン
ジバレル１０の内壁面と当接しており、この内壁面に対
して液密性を保持しながら摺動する。On the circumferential surface of the piston head 22, one
In the present embodiment, an appropriate number of continuous protrusions, as shown in FIG.
As shown in an enlarged manner, three flange portions 22A, 22A ... Are formed. The collar portions 22A, 22A ... Abut on the inner wall surface of the syringe barrel 10 and slide on the inner wall surface while maintaining liquid tightness.
【００１６】シリンジバレル１０は、突出筒部１３を有
する本体筒部１１と、突出筒部１３を同軸的に取り囲む
筒状のルアロック部１４とから構成されている。The syringe barrel 10 comprises a main body tubular portion 11 having a projecting tubular portion 13 and a tubular luer lock portion 14 coaxially surrounding the projecting tubular portion 13.
【００１７】ルアロック部１４は、その内周面１４ａに
適宜の数の、本実施の形態では２つのネジ山１５（２乗
ネジ山）が形成されており（ネジ山の形状の詳細につい
ては、後述する。）、突出筒部１３とでルアロック構造
１２を構成している。このルアロック構造１２は、ディ
スポ針などのロック対象を突出筒部１３に着脱自在に連
結するためのものである。すなわち、一般にディスポ針
などは、その基端部に管体部が設けられており、この管
体部の周面には、周回りに１周連続して突出する凸部
や、ネジ山などが形成されている。したがって、かかる
管体部をルアロック部１４と突出筒部１３との間の間隙
に螺入すると、その周面に形成された凸部やネジ山など
がネジ山１５によって軸方向に関して係止され、もって
ディスポ針などが突出筒部１３に対して連結されること
になる。The luer lock portion 14 has an appropriate number of, in the present embodiment, two screw threads 15 (square screw threads) formed on its inner peripheral surface 14a (for details of the shape of the screw threads, see It will be described later.), And the protruding tubular portion 13 constitutes the luer lock structure 12. The lure lock structure 12 is for detachably connecting a lock target such as a disposable needle to the protruding cylindrical portion 13. That is, in general, a disposable needle or the like is provided with a tubular body portion at its proximal end portion, and on the peripheral surface of this tubular body portion, there are projections protruding continuously around the circumference and screw threads. Has been formed. Therefore, when such a tubular body portion is screwed into the gap between the luer lock portion 14 and the protruding tubular portion 13, the convex portion or the screw thread formed on the peripheral surface thereof is locked by the screw thread 15 in the axial direction, Therefore, a disposable needle or the like is connected to the protruding cylindrical portion 13.
【００１８】そして、突出筒部１３の内空と本体筒部１
１の内空とは連通されているので、かかる連結により本
体筒部１１の内空とディスポ針とは突出筒部１３を介し
て連通され、この状態において使用されることになる。
ただし、本発明に係るシリンジは、ロック対象が連結さ
れることを必須の要件とするものではない。つまり、ロ
ック対象を備えることなく使用することも可能である。Then, the inner space of the protruding cylinder portion 13 and the main body cylinder portion 1
Since it is communicated with the inner space of No. 1, the inner space of the main body cylindrical portion 11 and the disposable needle are communicated with each other through the protruding cylindrical portion 13 by this connection, and they are used in this state.
However, the syringe according to the present invention does not require that the lock target is connected. That is, it is also possible to use it without providing a lock target.
【００１９】（シリンジバレルの製造方法）次に、以上
で示した構成を有するシリンジバレルの製造方法を説明
する。本実施の形態に係るシリンジバレル１１は、図３
に示すように、ルアロック部１４と本体筒部１１とを個
別に成形し、その後、これら成形品相互を接合一体化す
ることによって製造される。ルアロック部１４と本体筒
部１１とを個別に成形することにより、その成形にあた
って、わずかしかない突出筒部１３とルアロック部１４
との間の間隙が正確に形成され、かつルアロック部１４
の内周面１４ａに正確にネジ山１５（図２参照）が形成
される複雑な構造の金型を使用しなければならないとの
問題が解消される。つまり、金型を製造するためのコス
トを抑えることができ、また金型を多数個取りとするこ
ともできる。(Manufacturing Method of Syringe Barrel) Next, a manufacturing method of the syringe barrel having the above-described structure will be described. The syringe barrel 11 according to the present embodiment is shown in FIG.
As shown in FIG. 3, the luer lock part 14 and the main body cylinder part 11 are individually molded, and then these molded products are joined and integrated to be manufactured. By molding the luer lock part 14 and the main body cylinder part 11 separately, the protruding cylinder part 13 and the lure lock part 14 which are few in molding are formed.
And the luer lock portion 14 is formed accurately.
The problem that a mold having a complicated structure in which the screw threads 15 (see FIG. 2) are accurately formed on the inner peripheral surface 14a of the mold must be used is solved. That is, it is possible to reduce the cost for manufacturing the mold, and it is also possible to take a large number of molds.
【００２０】ルアロック部１４の成形は、ルアロック部
１４の外面形状と対応する外型と、図４及び図５に示す
ような一対のコア型５０，５０とからなる金型を利用し
て行うことを推奨する。The luer lock portion 14 is formed by using a die including an outer die corresponding to the outer surface shape of the luer lock portion 14 and a pair of core dies 50, 50 as shown in FIGS. 4 and 5. Is recommended.
【００２１】コア型５０は、その長手方向の一端面が半
円部５１及び５２に区分されている。この半円部５１及
び５２は、コア５０の軸直方向に対してそれぞれ相反す
る方向に傾斜させられており、図５の（Ａ）に示すよう
に、周縁部全長にわたり凹部５１Ａ又は５２Ａが形成さ
れている（なお、図４では凹部５１Ａ及び５２Ａの図示
を省略している。）。したがって、一対のコア型５０，
５０を、一方のコア型５０の半円部５１又は５２と、他
方のコア型５０の半円部５２又は５１とが当接するよう
に同軸的に突き合わせると、図５の（Ｂ）に示すよう
に、半円部５１の凹部５１Ａ及び半円部５２の凹部５２
Ａによって、対向する一方のコア型５０と他方のコア型
５０とに跨りかつルアロック部１４に形成されるネジ山
１５と対応した形状をなす溝型５３が、コア型５０，５
０の突き合わせ部位の外周面に形成されることになる
（この状態にすることを、以下、単にコア型５０，５０
を突き合わせるという。）。The core die 50 is divided into semicircular portions 51 and 52 at its one end face in the longitudinal direction. The semicircular portions 51 and 52 are inclined in directions opposite to the direction perpendicular to the axis of the core 50, and as shown in FIG. 5A, a concave portion 51A or 52A is formed over the entire length of the peripheral edge portion. (Note that the recesses 51A and 52A are not shown in FIG. 4). Therefore, the pair of core molds 50,
5 is coaxially butted so that the semicircular portion 51 or 52 of the one core die 50 and the semicircular portion 52 or 51 of the other core die 50 are brought into contact with each other, as shown in FIG. Thus, the recess 51A of the semi-circular portion 51 and the recess 52 of the semi-circular portion 52
By A, the groove die 53 that straddles the one core die 50 and the other core die 50 facing each other and has a shape corresponding to the screw thread 15 formed in the luer lock portion 14 is formed by the core die 50, 5.
It will be formed on the outer peripheral surface of the abutting portion of 0 (this state will be referred to as the core mold 50, 50 hereinafter).
To match. ).
【００２２】ルアロック部１４の成形にあたっては、外
型内に、コア型５０，５０を突き合わせた状態でかつ外
型内面から離間させた状態で配置し、外型とコア型との
間の間隙に樹脂などを流し込む。そして、しかる後、外
型を開くとともに、一対のコア型５０，５０を、図４に
示すように、回転させずに引き離して、成形したルアロ
ック部１４からそれぞれ引き抜き、成形品を得る。本方
法によると、コア型５０，５０を、その引き離し速度と
同調するように回転させる必要がないので、ルアロック
部などを破損するおそれがない。In forming the luer lock portion 14, the core molds 50, 50 are placed in the outer mold in a state of being abutted with each other and separated from the inner surface of the outer mold, and a gap is provided between the outer mold and the core mold. Pour resin etc. Then, after a while, the outer mold is opened, and the pair of core molds 50, 50 are separated without rotating, as shown in FIG. 4, and each is extracted from the molded luer lock portion 14 to obtain a molded product. According to this method, since it is not necessary to rotate the core molds 50, 50 so as to be synchronized with the pulling speed thereof, there is no risk of damaging the lure lock portion and the like.
【００２３】以上の方法によって得られるルアロック部
（成形品）１４は、図６及び図７に示すように、内周面
１４ａに半周しか連続しないネジ山１５が２本対向して
形成されたもの（二条雌ネジ）となる。As shown in FIGS. 6 and 7, the luer lock portion (molded product) 14 obtained by the above method is formed with two screw threads 15 which are continuous to each other on the inner peripheral surface 14a only for a half circumference. (Double thread female screw).
【００２４】ただし、ネジ山１５は、ロック対象の管体
部周面に形成された凸部やネジ山などを軸方向に関して
係止するものであるので、この係止が可能な範囲で適
宜、変更することができる。この際、ネジ山１５を下記
式（１）の要件を満たす多条ネジ山とすれば、コア型軸
方向と直交する平面でみてネジ山相互が重ならない形態
となる。この形態の場合、ルアロック部の成形にあたっ
てコア型を回転させることなく引き離すことができる。
なお、ｘはネジ山の長さを周回数として示すものであ
り、ｎは条数である。
ｘ ≦ １／ｎ …（１）However, since the screw thread 15 is for locking the convex portion or the screw thread formed on the peripheral surface of the tubular body portion to be locked in the axial direction, the screw thread 15 can be appropriately locked within a range where this locking is possible. Can be changed. At this time, if the thread 15 is a multi-thread thread that satisfies the requirement of the following expression (1), the threads do not overlap with each other when viewed in a plane orthogonal to the core die axial direction. In the case of this configuration, the core die can be separated without rotating when forming the luer lock portion.
Note that x indicates the length of the screw thread as the number of turns, and n indicates the number of threads. x ≤ 1 / n (1)
【００２５】以上のようにしてルアロック部１４を成形
したら、次に、このルアロック部１４を本体筒部１１の
先端部分１１ａに接合する。この接合方法としては、種
々の方法を考えることができるが、本実施の形態におい
ては、以下、３種類の方法を説明する。After the luer lock portion 14 is molded as described above, the luer lock portion 14 is then joined to the tip portion 11a of the main body tubular portion 11. Although various methods can be considered as this joining method, three types of methods will be described below in the present embodiment.
【００２６】（溶融による接合：請求項２記載の発明の
具体化）本方法は、本体筒部１１及びルアロック部１４
の各々における少なくとも接合予定部分をポリメチルペ
ンテン、ポリスチレン、ポリメタクリル酸メチル（ＰＭ
ＭＡ）などの熱可塑性樹脂で、好ましくはポリプロピレ
ン、ポリカーボネート、ポリアリレートなどの熱可塑性
樹脂で、より好ましくは環状ポリオレフィンなどの熱可
塑性樹脂で形成しておき、接合に際し、接合予定部分相
互を溶融接合するものである。接合予定部分相互を溶融
接合する方法としては、種々の方法を考えることができ
るが、超音波による振動を利用して溶融させる方法を推
奨する。(Joining by melting: embodying the invention according to claim 2) The present method comprises a main body tubular portion 11 and a luer lock portion 14.
At least the portions to be joined in each of the above are polymethylpentene, polystyrene, polymethylmethacrylate (PM
MA) or the like, preferably polypropylene, polycarbonate, polyarylate or the like, and more preferably cyclic polyolefin or other thermoplastic resin, and when joining, the joining portions are melt-joined to each other. To do. Various methods can be considered as a method of fusion-bonding the portions to be welded to each other, but a method of melting by utilizing vibration by ultrasonic waves is recommended.
【００２７】（接合剤による接合：請求項３記載の発明
の具体化）本方法は、本体筒部１１とルアロック部１４
とを接合剤を用いて接合するものである。接合剤として
は、例えば、キシレン、トルエン、メチルエチルケトン
（ＭＥＫ）、ｎ‐ヘキサンなどやその混合溶液を使用す
ると好ましい。また、プラスチックペレットをかかる溶
液に溶かし込んだものや、ＵＶ硬化型、シアノアクリレ
ート系、シリコーン系の接着剤を使用するとより好まし
い。本方法においては、接合剤を使用するのみなので、
シリンジバレルの製造が、簡易かつ安価なものとなる。(Joining with a Bonding Agent: Embodiment of the Invention According to Claim 3) The present method comprises a main body tubular portion 11 and a luer lock portion
And are joined together using a joining agent. As the bonding agent, for example, xylene, toluene, methyl ethyl ketone (MEK), n-hexane, or a mixed solution thereof is preferably used. It is more preferable to use a plastic pellet dissolved in such a solution, or a UV-curable, cyanoacrylate-based, or silicone-based adhesive. In this method, since only the bonding agent is used,
Manufacture of syringe barrels will be simple and inexpensive.
【００２８】（熱膨張のよる接合：請求項４記載の発明
の具体化）本方法は、少なくとも接合に先立って、本体
筒部１１の先端部分１１ａ及びルアロック部１４のいず
れか一方に凸部を設け、かつ他方に凹部を設けておき、
接合に際し、凹部を加熱により熱膨張させ、この熱膨張
状態の凹部内に凸部を挿入又は嵌合させた後、減温して
凹部を収縮させて挿入又は嵌合部分を密着させ、これに
よってルアロック部１４と本体筒部１１との接合一体化
を行うものである。(Joining by Thermal Expansion: Implementation of the Invention According to Claim 4) In this method, at least prior to joining, a convex portion is formed on one of the tip portion 11a of the main body tubular portion 11 and the luer lock portion 14. And a recess is provided on the other side,
Upon joining, the concave portion is thermally expanded by heating, and the convex portion is inserted or fitted into the concave portion in the thermally expanded state, and then the temperature is reduced to shrink the concave portion to bring the inserting or fitting portion into close contact. The luer lock part 14 and the main body cylinder part 11 are joined and integrated.
【００２９】この形態には、例えば、図８（Ａ）に示す
ように、ルアロック部１４の一端を凹部として機能さ
せ、本体筒部１１の先端部分１１ａを凸部として機能さ
せ、ルアロック部１４を加熱により熱膨張させ、この熱
膨張状態のルアロック部１４内に本体筒部１１の先端部
分１１ａを挿入又は嵌合させた後、減温してルアロック
部１４を収縮させて挿入又は嵌合部分を密着させ、これ
によってルアロック部１４と本体筒部１１との接合一体
化を行うものをも含む。また、図８（Ｂ）に示すよう
に、ルアロック部１４の一端に軸心に向かって突出する
周回りに一周する凸部１６を設け、かかる部分をもって
（軸方向に関して）凹部として機能させ、本体筒部１１
の先端部分１１ａに設けられた突出筒部１３を凸部とし
て機能させ、ルアロック部１４を加熱により熱膨張さ
せ、この熱膨張状態のルアロック部１４（凸部１６）内
に突出筒部１３を挿入又は嵌合させた後、減温してルア
ロック部１４を収縮させて挿入又は嵌合部分を密着さ
せ、これによってルアロック部１４と本体筒部１１との
接合一体化を行うものをも含む。In this embodiment, for example, as shown in FIG. 8A, one end of the luer lock portion 14 functions as a concave portion, and the tip end portion 11a of the main body tubular portion 11 functions as a convex portion, so that the lure lock portion 14 is After thermal expansion by heating and inserting or fitting the tip portion 11a of the main body tubular portion 11 into the luer lock portion 14 in the thermally expanded state, the temperature is decreased to shrink the luer lock portion 14 to shrink the insertion or fitting portion. Also included are those that are brought into close contact with each other so that the luer lock portion 14 and the main body tubular portion 11 are joined and integrated. Further, as shown in FIG. 8 (B), one end of the luer lock portion 14 is provided with a convex portion 16 that makes one round around the circumference and protrudes toward the axis, and such a portion functions as a concave portion (with respect to the axial direction), and Tube part 11
The protruding cylindrical portion 13 provided on the tip portion 11a of the above is made to function as a convex portion, the luer lock portion 14 is thermally expanded by heating, and the protruding cylindrical portion 13 is inserted into the luer lock portion 14 (convex portion 16) in the thermally expanded state. Alternatively, after fitting, the lure lock portion 14 is contracted to shrink the lure lock portion 14 so that the insertion or fitting portion is brought into close contact with the lure lock portion 14 and the main body tubular portion 11 to be joined and integrated.
【００３０】この際、凹部の内径Ａと凸部の外径Ｂと
は、下記式（２）の要件を満たす関係とすることができ
る。なお、Ｓは「線膨張係数（例えば、１０-5／
℃）」、ΔＴは「耐熱温度−常温」である。
Ａ＋Ａ×Ｓ×ΔＴ≧Ｂ …（２）At this time, the inner diameter A of the concave portion and the outer diameter B of the convex portion can be set to satisfy the requirement of the following expression (2). In addition, S is “a linear expansion coefficient (for example, 10 −5 /
° C) "and ΔT are" heat resistant temperature-normal temperature ". A + A × S × ΔT ≧ B (2)
【００３１】なお、挿入又は嵌合とは、熱膨張状態にお
いて凹部の内周面と凸部の外周面とが接触する関係とな
るか否かを問わない趣旨である。The term "insertion" or "fitting" means that it does not matter whether the inner peripheral surface of the concave portion and the outer peripheral surface of the convex portion are in contact with each other in the thermal expansion state.
【００３２】（その他）ところで、以上で説明した接合
方法は、ルアロック部を推奨方法（前述した、コア型を
回転させないで引き抜く方法）によって成形した場合
（ただし、図８（Ｂ）の形態は除く。）に、特に有用な
ものである。したがって、例えば、図９に示すように、
ルアロック部１４の一端部内周面に係止部１７を設ける
とともに、突出筒部１３の外周面に軸心方向に凹む係止
部１７に対応する受け係止部１８を設け、接合は、係止
部１７と受け係止部１８との係止によるということもで
きる。(Others) By the way, in the joining method described above, when the luer lock portion is formed by the recommended method (the above-mentioned method of pulling out without rotating the core die) (however, the form of FIG. 8B is excluded). .) Is especially useful. Therefore, for example, as shown in FIG.
The engaging portion 17 is provided on the inner peripheral surface of one end of the luer lock portion 14, and the receiving engaging portion 18 corresponding to the engaging portion 17 recessed in the axial direction is provided on the outer peripheral surface of the projecting tubular portion 13, and the engagement is performed by the engaging operation. It can also be said that the part 17 and the receiving locking part 18 are locked.
【００３３】[0033]
【発明の効果】以上のとおり、本発明によるシリンジバ
レルの製造方法、又はその方法により得られたシリンジ
バレルを有するシリンジによれば、複雑な構造の金型を
使用する必要がなくなる。As described above, according to the method for manufacturing a syringe barrel according to the present invention or the syringe having the syringe barrel obtained by the method, it is not necessary to use a mold having a complicated structure.
【図１】従来の形態に係るルアロック構造の断面図であ
る。FIG. 1 is a cross-sectional view of a luer lock structure according to a conventional form.
【図２】シリンジの断面図である。FIG. 2 is a sectional view of a syringe.
【図３】ルアロック構造の製造過程を示した斜視図であ
る。FIG. 3 is a perspective view showing a manufacturing process of the lure lock structure.
【図４】ルアロック部の成形過程を示した斜視図であ
る。FIG. 4 is a perspective view showing a forming process of a luer lock part.
【図５】コアの形状を説明するための側面説明図であ
る。FIG. 5 is a side view for explaining the shape of the core.
【図６】ルアロック部の斜視図である。FIG. 6 is a perspective view of a luer lock portion.
【図７】ルアロック部の断面図である。FIG. 7 is a cross-sectional view of a luer lock portion.
【図８】本体筒部の先端部分とルアロック部との関係を
示した断面図である。FIG. 8 is a cross-sectional view showing a relationship between a tip end portion of a main body tubular portion and a luer lock portion.
【図９】本体筒部の先端部分とルアロック部との関係を
示した断面図である。FIG. 9 is a cross-sectional view showing the relationship between the tip portion of the main body tubular portion and the luer lock portion.
１０…シリンジバレル、１１，１０１…本体筒部、１２
…ルアロック構造、１３，１０２…突出筒部、１４，１
０３…ルアロック部、１５，１０４…ネジ山、２０…ピ
ストン、２１…ピストン本体部、２２…ピストン頭部、
５０…コア型。10 ... Syringe barrel, 11, 101 ... Main body tubular part, 12
... Lure lock structure, 13,102 ... Projecting cylinder part, 14,1
03 ... lure lock part, 15, 104 ... screw thread, 20 ... piston, 21 ... piston body part, 22 ... piston head part,
50 ... Core type.
Claims (7)
部を有する本体筒部と、前記突出筒部を同軸的に取り囲
みかつ内周面にネジ山が形成された筒状のルアロック部
とから構成される、樹脂製シリンジバレルの製造方法に
おいて、 少なくとも前記ルアロック部と前記本体筒部とを個別に
成形した後、これら成形品相互を接合一体化し、前記ル
アロック構造の樹脂製シリンジバレルを得ることを特徴
とするシリンジバレルの製造方法。1. A main body tubular portion having a projecting tubular portion to which a locking object is detachably connected, and a tubular luer lock portion coaxially surrounding the projecting tubular portion and having a thread formed on an inner peripheral surface thereof. In the method for manufacturing a resin syringe barrel, the at least the luer lock portion and the main body cylinder portion are individually molded, and then these molded products are joined and integrated to obtain the resin syringe barrel having the luer lock structure. A method for manufacturing a syringe barrel, comprising:
少なくとも接合予定部分を熱可塑性樹脂で形成してお
き、 接合に際し、前記接合予定部分相互を溶融接合する請求
項１記載のシリンジバレルの製造方法。2. The method of manufacturing a syringe barrel according to claim 1, wherein at least portions to be joined in each of the main body tubular portion and the luer lock portion are formed of a thermoplastic resin, and the joining portions are melt-joined to each other in joining. .
て接合する請求項１記載のシリンジバレルの製造方法。3. The method of manufacturing a syringe barrel according to claim 1, wherein the main body tubular portion and the luer lock portion are joined together by using a joining agent.
端部分及びルアロック部のいずれか一方に凸部を設け、
かつ他方に凹部を設けておき、 前記接合に際し、前記凹部を加熱により熱膨張させ、こ
の熱膨張状態の凹部内に前記凸部を挿入又は嵌合させた
後、減温して前記凹部を収縮させて前記挿入又は嵌合部
分を密着させ、これによって前記ルアロック部と本体筒
部との接合一体化を行う、請求項１記載のシリンジバレ
ルの製造方法。4. A projection is provided on at least one of a tip portion of a main body tubular portion and a luer lock portion prior to joining,
In addition, a recess is provided on the other side, and at the time of the joining, the recess is thermally expanded by heating, and the projection is inserted or fitted into the recess in the thermally expanded state, and then the temperature is reduced to shrink the recess. The method for manufacturing a syringe barrel according to claim 1, wherein the insertion or fitting portion is brought into close contact with each other, and thereby the luer lock portion and the main body tubular portion are joined and integrated.
定まる周回数分しか連続しない多条ネジ山である、請求
項１〜４のいずれか１項に記載のシリンジバレルの製造
方法。 ｘ ≦ １／ｎ …（１） ｘ：ネジ山の周回数，ｎ：条数5. The method for manufacturing a syringe barrel according to claim 1, wherein the thread of the luer lock portion is a multi-thread thread that is continuous only for the number of turns determined by the following formula (1). . x ≤ 1 / n (1) x: number of turns of screw thread, n: number of threads
部の成形に際し、 長手方向の端面相互を同軸的に突き合わせたときに、対
向する一方の部分と他方の部分とに跨りかつ前記ネジ山
と対応した形状をなす溝型が、当該突き合わせ部位の外
周面に形成されるように構成された、一対のコア型を用
い、 前記ルアロック部外面形状と対応する外型内に、前記一
対のコア型を前記突き合わせた状態でかつ外型内面から
離間させた状態で配置して成形を行い、 しかる後、外型を開くとともに、前記一対のコア型を回
転させずに引き離して、成形したルアロック部からそれ
ぞれ引き抜き、成形品を得る、 請求項５記載のシリンジバレルの製造方法。6. When forming a luer lock part to form a multi-threaded thread, when the end faces in the longitudinal direction are coaxially butted against each other, the part straddles one and the other part facing each other and the screw is formed. A groove type having a shape corresponding to the mountain is configured to be formed on the outer peripheral surface of the abutting portion, using a pair of core dies, and in the outer die corresponding to the luer lock portion outer surface shape, the pair of Molding is performed by placing the core molds in the abutted state and in a state of being separated from the inner surface of the outer mold, and then opening the outer mold and separating the pair of core molds without rotating the molded luer lock. The method for manufacturing a syringe barrel according to claim 5, wherein each of the parts is pulled out to obtain a molded product.
によって得られるシリンジバレルと、このシリンジバレ
ル内に挿入されるピストンとを備えたことを特徴とする
シリンジ。7. A syringe comprising a syringe barrel obtained by the method according to any one of claims 1 to 6, and a piston inserted into the syringe barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002044848A JP2003235992A (en) | 2002-02-21 | 2002-02-21 | Syringe barrel manufacturing method and syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002044848A JP2003235992A (en) | 2002-02-21 | 2002-02-21 | Syringe barrel manufacturing method and syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003235992A true JP2003235992A (en) | 2003-08-26 |
Family
ID=27784058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002044848A Pending JP2003235992A (en) | 2002-02-21 | 2002-02-21 | Syringe barrel manufacturing method and syringe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003235992A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008119359A (en) * | 2006-11-15 | 2008-05-29 | Arte Corp | Luer-lock type cylindrical tip of syringe |
| JP2012502701A (en) * | 2008-09-22 | 2012-02-02 | メッドミックス システムズ アーゲー | Ejector connector with mixing element |
| JP2012530585A (en) * | 2009-06-24 | 2012-12-06 | ベクトン ディキンソン フランス | Binding assembly for a drug delivery device and method for making the assembly |
| JPWO2015030063A1 (en) * | 2013-09-02 | 2017-03-02 | 大成化工株式会社 | Syringe and syringe set |
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| WO2001091839A1 (en) * | 2000-05-26 | 2001-12-06 | Becton Dickinson France | Luer-lock type sealing connection device for medical use, and syringe comprising same |
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| US5113571A (en) * | 1990-01-29 | 1992-05-19 | Manska Wayne E | Method of manufacturing a connector for medical devices |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008119359A (en) * | 2006-11-15 | 2008-05-29 | Arte Corp | Luer-lock type cylindrical tip of syringe |
| JP2012502701A (en) * | 2008-09-22 | 2012-02-02 | メッドミックス システムズ アーゲー | Ejector connector with mixing element |
| JP2012530585A (en) * | 2009-06-24 | 2012-12-06 | ベクトン ディキンソン フランス | Binding assembly for a drug delivery device and method for making the assembly |
| JPWO2015030063A1 (en) * | 2013-09-02 | 2017-03-02 | 大成化工株式会社 | Syringe and syringe set |
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